Initial commit

spec/models/visualization/name_generator_spec.rb

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+require 'ostruct'
+require_relative '../../spec_helper'
+require_relative '../../../app/models/visualization/name_generator'
+
+include CartoDB
+
+describe Visualization::NameGenerator do
+  describe '#generate' do
+    it 'returns the candidate name if available' do
+      user        = Object.new
+      candidate   = 'Non existing name'
+      checker     = positive_checker
+      generator   = Visualization::NameGenerator.new(user, checker)
+      generator.name(candidate).should == candidate
+    end
+
+    it 'returns an altered name if no available candidate' do
+      user        = Object.new
+      existing    = 'visualization 1'
+      checker     = negative_checker
+      generator   = Visualization::NameGenerator.new(user, checker)
+
+      generator.name(existing).should_not == existing
+    end
+
+    it 'returns a generated name if no candidate' do
+      user        = Object.new
+      checker     = negative_checker
+      generator   = Visualization::NameGenerator.new(user, checker)
+
+      generator.name.should =~ /#{Visualization::NameGenerator::PATTERN}/
+    end
+
+    it 'accepts names with non-ASCII characters' do
+      user        = Object.new
+      checker     = positive_checker
+      candidate   = 'Me gustan los ñúes'
+      generator   = Visualization::NameGenerator.new(user, checker)
+      generator.name(candidate).should == candidate
+    end
+
+    it 'strips leading and trailing whitespace from candidates' do
+      user        = Object.new
+      checker     = positive_checker
+      candidate   = '      viva la pepa     '
+      generator   = Visualization::NameGenerator.new(user, checker)
+      generator.name(candidate).should == 'viva la pepa'
+    end
+
+    it 'assigns a valid name if a explicit nil candidate is passed' do
+      user        = Object.new
+      checker     = positive_checker
+      candidate   = '      viva la pepa     '
+      generator   = Visualization::NameGenerator.new(user, checker)
+      generator.name(nil).should == Visualization::NameGenerator::PATTERN
+    end
+
+    it 'assigns an incremental number' do
+      user = Object.new
+      candidate = 'Untitled map'
+      Visualization::NameGenerator.new(user, negative_checker([])).name(candidate).should == candidate
+      Visualization::NameGenerator.new(user, negative_checker([candidate])).name(candidate).should == "#{candidate} 1"
+      Visualization::NameGenerator.new(user, negative_checker([candidate, "#{candidate} 1"])).name(candidate).should == "#{candidate} 2"
+      Visualization::NameGenerator.new(user, negative_checker([candidate, "#{candidate} 1", "#{candidate} 2"])).name(candidate).should == "#{candidate} 3"
+    end
+  end
+
+  def positive_checker
+    checker = Object.new
+    def checker.available?(*args); true; end
+    checker
+  end
+
+  def negative_checker(existing = [ 'visualization 1', 'Untitled visualization', 'Untitled visualization 0', 'Untitled visualization 1'])
+    checker = OpenStruct.new
+    checker.existing = existing
+    def checker.available?(candidate)
+      !existing.include?(candidate)
+    end
+    checker
+  end
+end
+